:root {
  --bg-dark: #0f172a;
  --panel-bg: rgba(30, 41, 59, 0.7);
  --panel-border: rgba(255, 255, 255, 0.1);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent-primary: #38bdf8;
  --accent-hover: #0284c7;
  --accent-emerald: #10b981;
  --accent-purple: #a855f7;
  --accent-amber: #f59e0b;
  --danger: #ef4444;
  --font-family: 'Inter', sans-serif;
  --font-mono: 'Fira Code', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(at 0% 0%, rgba(56, 189, 248, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.15) 0px, transparent 50%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Top Navigation Bar */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--panel-border);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  font-size: 2rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.5rem;
  border-radius: 12px;
  border: 1px solid var(--panel-border);
}

.top-nav h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.sub-title {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.system-status {
  display: flex;
  gap: 0.75rem;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--panel-border);
  border-radius: 9999px;
  color: var(--text-muted);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.dot.green { background-color: #10b981; box-shadow: 0 0 8px #10b981; }
.dot.blue { background-color: #38bdf8; box-shadow: 0 0 8px #38bdf8; }
.dot.purple { background-color: #a855f7; box-shadow: 0 0 8px #a855f7; }

.user-auth-area {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.role-pill {
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--panel-border);
}
.role-pill.guest { background: rgba(148, 163, 184, 0.1); color: var(--text-muted); }
.role-pill.admin { background: rgba(239, 68, 68, 0.15); border-color: rgba(239, 68, 68, 0.4); color: #fca5a5; }
.role-pill.editor { background: rgba(245, 158, 11, 0.15); border-color: rgba(245, 158, 11, 0.4); color: #fcd34d; }
.role-pill.viewer { background: rgba(56, 189, 248, 0.15); border-color: rgba(56, 189, 248, 0.4); color: #7dd3fc; }

/* Buttons */
.btn {
  font-family: var(--font-family);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary { background: var(--accent-primary); color: #0f172a; }
.btn-primary:hover { background: var(--accent-hover); color: white; }

.btn-accent { background: var(--accent-emerald); color: #0f172a; }
.btn-accent:hover { background: #059669; color: white; }

.btn-secondary { background: rgba(255, 255, 255, 0.1); color: var(--text-main); border: 1px solid var(--panel-border); }
.btn-secondary:hover { background: rgba(255, 255, 255, 0.2); }

.btn-danger { background: rgba(239, 68, 68, 0.2); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.4); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.8); color: white; }

.btn-block { width: 100%; }
.btn-icon { background: transparent; color: var(--text-muted); font-size: 1.2rem; padding: 0.2rem 0.5rem; }
.btn-icon:hover { color: white; }

/* Layout Grid */
.main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 320px;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  border-right: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  gap: 1.25rem;
}

.search-box {
  width: 100%;
  padding: 0.6rem 0.8rem;
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-family);
  margin-bottom: 0.75rem;
}

.category-filter h3, .doc-list-container h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.filter-pills {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.filter-pill {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
}
.filter-pill.active { background: var(--accent-primary); color: #0f172a; font-weight: 600; }

.doc-list-container {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.doc-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.doc-item {
  padding: 0.75rem;
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.doc-item:hover, .doc-item.active {
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--accent-primary);
}

.doc-item-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.doc-item-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Badges */
.badge {
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  text-transform: uppercase;
  font-weight: 700;
}
.badge.public { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }
.badge.internal { background: rgba(56, 189, 248, 0.2); color: #7dd3fc; }
.badge.confidential { background: rgba(239, 68, 68, 0.2); color: #fca5a5; }

/* Main Content Area */
.content-area {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.doc-view-card, .editor-card {
  background: rgba(30, 41, 59, 0.5);
  backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 2rem;
  flex: 1;
}

.doc-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.doc-meta-bar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

.category-tag {
  font-size: 0.75rem;
  color: var(--accent-primary);
  background: rgba(56, 189, 248, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.meta-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.divider {
  border: none;
  height: 1px;
  background: var(--panel-border);
  margin: 1.25rem 0;
}

/* Markdown Render Styling */
.markdown-body {
  line-height: 1.7;
  color: #e2e8f0;
}
.markdown-body h1 { font-size: 1.8rem; margin: 1rem 0; color: #f8fafc; }
.markdown-body h2 { font-size: 1.4rem; margin: 1rem 0; color: #f1f5f9; border-bottom: 1px solid var(--panel-border); padding-bottom: 0.3rem; }
.markdown-body h3 { font-size: 1.1rem; margin: 0.8rem 0; color: #cbd5e1; }
.markdown-body p { margin-bottom: 1rem; }
.markdown-body ul, .markdown-body ol { margin-left: 1.5rem; margin-bottom: 1rem; }
.markdown-body pre { background: #090d16; padding: 1rem; border-radius: 8px; overflow-x: auto; margin-bottom: 1rem; border: 1px solid var(--panel-border); }
.markdown-body code { font-family: var(--font-mono); font-size: 0.9em; background: rgba(255,255,255,0.08); padding: 0.15em 0.3em; border-radius: 4px; }
.markdown-body blockquote { border-left: 4px solid var(--accent-primary); padding-left: 1rem; color: var(--text-muted); margin-bottom: 1rem; background: rgba(56,189,248,0.05); padding: 0.75rem 1rem; border-radius: 0 8px 8px 0; }

/* Editor Form */
.form-row { display: flex; gap: 1rem; }
.flex-1 { flex: 1; }
.flex-2 { flex: 2; }
.form-group { margin-bottom: 1rem; display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }
.form-group input, .form-group select, .form-group textarea {
  padding: 0.6rem;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--text-main);
  font-family: var(--font-family);
}
.form-group textarea { font-family: var(--font-mono); resize: vertical; }

.editor-footer { display: flex; justify-content: flex-end; gap: 1rem; margin-top: 1rem; }

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}
.modal-card {
  background: rgba(30, 41, 59, 0.95);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  width: 480px;
  max-width: 90vw;
  padding: 1.5rem;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.quick-role-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.5rem; margin: 1rem 0; }
.role-card {
  padding: 0.75rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
}
.role-card:hover { border-color: var(--accent-primary); transform: translateY(-2px); }
.role-title { font-weight: 700; font-size: 0.85rem; margin-bottom: 0.2rem; }
.role-desc { font-size: 0.65rem; color: var(--text-muted); }
.form-divider { text-align: center; margin: 1rem 0; position: relative; }
.form-divider span { background: rgba(30, 41, 59, 0.95); padding: 0 0.5rem; font-size: 0.7rem; color: var(--text-muted); }
.error-alert { background: rgba(239, 68, 68, 0.2); color: #fca5a5; padding: 0.6rem; border-radius: 6px; font-size: 0.8rem; margin-bottom: 1rem; border: 1px solid rgba(239, 68, 68, 0.4); }